A: Dishwasher: REMOVE dishwashing rinse agent before using CLR Calcium, Lime and Rust Remover. Pour a 1/2 cup of CLR Calcium, Lime and Rust Remover directly into the bottom of an empty dishwasher (no glasses, dishes, or flatware but the racks can stay). Run a normal cycle followed by an extra rinse cycle. Make sure there are no detergents or any other chemicals in the machine while using our product. Washing Machine: Run your empty machine (no clothes) without detergent up to the main wash cycle, which is where the water stops and the cycle is about to agitate. Stop the machine and add one-half cup of CLR Calcium, Lime and Rust Remover directly into the tub of the machine. Finish cycle. Run one additional full cycle (wash and rinse) with water only to rinse machine fully. If your machine is HE (high efficiency) and/or 'Water Saver' we recommend using a 1/4 cup of CLR Calcium, Lime and Rust Remover, instead of the normal 1/2 cup recommended for any other type of washer/dishwasher. For Front Loading Machines: Simply add a 1/2 cup of CLR Calcium, Lime and Rust Remover to the soap dispenser (only 1/4 of a cup for HE machines). After the full cycle has completed, run an additional rinse cycle with just water. Make sure there are no clothes or other chemicals in the machine when using our product.

A: Add a ½ cup of CLR to either machine where you normally would add your detergent or softener and run your machine. With both types of washers, once the cycle with the CLR has finished, run an additional full cycle with just water. If your machine is high efficiency or “water saver” only use ¼ cup of CLR.

A: While our CLR Calcium, Lime and Rust Remover is safe to use on white grout only (no other color), it's specifically formulated to dissolve mineral deposits caused by hard water (calcium/lime) and/or rust or soap scum. It's not formulated as a general grout cleaner

A: Not a clue but I would ask your washer mfg

A: CLR Calcium, Lime & Rust Remover cannot be used on any natural stones, including limestone. Limestone is naturally made of calcium/LIME so using a calcium/LIME remover on something naturally made of lime will compromise the natural integrity of the stone.

A: We do not recommend using any of our products in or on a hot water heater (tank or tankless).

A: In general, our CLR Calcium, Lime and Rust Remover can safely be used on chrome or stainless steel only, no other metals/finishes. As with any product, we always recommend spot testing first.

A: While our product is safe to clean nozzles associated with bidet's, we always recommend checking with the manufacturer of your bidet to see what they recommend using on their materials. As with any product, it's important to spot test first and adhere to the directions as stated on the back label of the product.

A: Our product dissolves the mineral deposits upon direct contact, undiluted, in a toilet bowl by layers. We recommend removing the water from the bowl if the mineral deposits are at or below the water level for maximum results. The more water in the toilet bowl, the more diluted the product becomes rendering it less effective.

A: We do not recommend using our CLR Calcium, Lime and Rust Remover on porous materials such as rubber.

A: Our CLR Calcium, Lime and Rust Remover is safe to use on faucets made of chrome or stainless steel only, so if your faucet is made of either one of those metals, it would be safe.

A: Yes, our CLR Calcium, Lime and Rust Remover is safe and effective in removing rust from chrome or stainless-steel parts of a bike. It should not be used on any painted, coated or sealed surfaces.